An-225 Cossack

The An-225 Mriya, NATO reporting name Cossack, was created for one of the most demanding airlift tasks of the Cold War: transporting the Soviet Buran orbiter and other space-program hardware. Antonov enlarged the An-124 concept with six engines, a longer fuselage, and a distinctive twin-tail arrangement that kept airflow stable when large loads were carried on top of the fuselage. Only one aircraft was completed, making it both an engineering achievement and a uniquely scarce strategic transport asset.

The An-225's design pushed the An-124 heavy-lift architecture to an extreme scale. Six turbofan engines provided the thrust needed for very heavy payloads, while the cargo hold and strengthened floor supported massive internal loads. The aircraft's twin vertical tails were chosen to preserve control when outsized external cargo disrupted airflow over the rear fuselage. This design gave Mriya record-setting capacity, but also made operations complex, expensive, and dependent on specialized crews, maintenance knowledge, and suitable airfields.

After the Soviet space program ended, the An-225 found a second life carrying extraordinary commercial and humanitarian loads that could not be moved by ordinary cargo aircraft. It became globally recognizable because each flight represented a rare heavy-lift capability. The aircraft was destroyed at Hostomel Airport during the opening phase of Russia's 2022 full-scale invasion of Ukraine, turning Mriya into both an aviation loss and a national symbol. Discussion of rebuilding has continued, but recreating the aircraft would require major funding, components, and industrial capacity.